Your senior dog seems perfectly fine all day. Then the sun starts to set, and everything changes. Pacing, whining, staring at walls, refusing to settle. If evenings have become the hardest part of your day, you may be dealing with sundowners in dogs, a real and often misunderstood pattern that disrupts sleep and leaves both pet and owner exhausted. You definitely don’t want your fur baby to suffer, so how can you help?
This guide explains what sundowning is, how to spot it, why it happens, and how CBD oil for sundowning dogs may fit into a broader care plan alongside your veterinarian's guidance.
What Is Sundowning in Dogs?

So, what is sundowning in dogs? Sundowning is a pattern of confusion, anxiety, and restlessness that appears or worsens in the late afternoon, evening, or overnight hours. The term comes from human dementia care, where caregivers noticed that patients became more agitated as daylight faded. In dogs, it is most often seen in seniors and is closely linked to canine cognitive dysfunction (CCD), sometimes called dog dementia or doggy Alzheimer's. Did you know sundowning still isn't common knowledge among pet owners? But awareness is growing, and we are here to help.
It helps to understand that sundowning is a pattern, not a stand-alone diagnosis. The underlying condition is usually cognitive decline, and the evening timing is simply when the symptoms become hardest to ignore. Fewer visual and social cues, lower light, and a quieter house all make it harder for a confused dog to make sense of their surroundings.
Do Dogs Get Sundowners?
Yes, dogs do get sundowners. Many owners are surprised to learn that dogs can experience something very similar to what humans with dementia go through, but veterinary research supports it. Cognitive decline becomes more common with age. One frequently cited estimate suggests that roughly 28 percent of dogs aged 11 to 12 show some degree of cognitive dysfunction, rising to around 48 percent by age 14 and 68 percent by age 16. Other sources note that more than half of dogs over 10 show at least some signs.
Not every dog with cognitive dysfunction sundowns, but those that do tend to show their worst symptoms as the day winds down. Some owners also notice episodes become more frequent in winter, when shorter days mean more hours of darkness.
Can Dogs Get Sundowners Syndrome?
Can dogs get sundowners syndrome? They can, and the term sundowners syndrome in dogs is now widely used by vets and pet owners alike, even though the underlying medical condition is technically canine cognitive dysfunction. Think of sundowners as the evening face of CCD. Your vet will diagnose and treat the cognitive changes behind it, which is why an accurate diagnosis matters more than the label.
One important note: if your dog's confusion or disorientation comes on suddenly, treat it as a possible emergency and call your vet right away. Sundowning develops gradually. Sudden changes can point to problems like a stroke, poisoning, or another acute condition.
Signs of Sundowning in Dogs
Recognizing the signs of sundowning in dogs early helps you get the right support in place sooner. Here is what owners most commonly notice.
Sundowning in Dogs Symptoms to Watch For
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Restlessness and pacing. Your dog walks back and forth and cannot settle or find a comfortable spot, sometimes for hours.
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Increased vocalization. Barking, whining, or whimpering with no obvious trigger, especially after dark.
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Disorientation and confusion. Staring blankly, getting stuck in corners, or seeming lost in familiar rooms.
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Anxiety and fear. Panting, trembling, hiding, or constantly seeking reassurance. Everyday sounds and shadows may seem frightening.
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Reversed sleep-wake cycle. Sleeping heavily through the day, then wide awake and restless at night.
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House-soiling accidents. Indoor accidents in a dog who was previously house-trained.
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Changes in interaction. Some dogs become withdrawn, while others become unusually clingy and needy.
These symptoms of sundowners in dogs, especially when they start or intensify in the evening, are worth discussing with your veterinarian. Keeping a short log of when episodes begin and how long they last makes that conversation far more productive.
What Causes Sundowners Syndrome in Dogs?
Sundowning is not simply a normal part of getting old. It usually signals changes in your dog's brain or body. Understanding the possible causes helps you work with your vet to find the right approach.
1. Canine Cognitive Dysfunction (CCD)
This is the most common cause. Aging brains can change in ways that resemble human dementia, affecting memory, learning, awareness, and sleep regulation. When light fades and the house goes quiet, a dog with CCD has fewer clues to orient themselves, and confusion and anxiety can intensify.
2. Disrupted Circadian Rhythm
An older dog's internal body clock can drift out of sync. A dog who naps most of the day may reach bedtime with no natural sleep drive left, leading to restless, wakeful nights.
3. Pain and Discomfort
Arthritis and joint pain can make it hard to lie down comfortably. A dog who cannot get comfortable will pace, and nighttime restlessness from pain can look exactly like sundowning.
4. Sensory Decline
Failing vision makes dim rooms disorienting, and reduced hearing can leave a dog feeling isolated or easily startled in quiet evening hours.
5. Anxiety and Fear
The shift from bright to dim light can make familiar spaces look different, which may increase fear in an older dog. Changes such as moving furniture, travel, or new people or pets in the home can make symptoms worse.
6. Underlying Medical Conditions
Thyroid problems, kidney or liver disease, urinary tract infections, and high blood pressure can all cause behavior changes that mimic sundowning. Cognitive dysfunction is generally a diagnosis of exclusion, meaning your vet needs to rule these out first. Many of them are treatable.
Related: How CBD Can Improve Quality of Life for Older Dogs
CBD Oil for Sundowning Dogs: Potential Benefits
CBD (cannabidiol) is a compound found in hemp that does not cause a high. It interacts with the endocannabinoid system (ECS), a network found in all mammals that helps regulate mood, sleep, pain, and memory. Research on CBD in dogs is still developing, and it is not a cure for cognitive dysfunction. Still, many owners and holistic-minded vets consider CBD oil for sundowning dogs as one supportive tool among several.
1. May Help Calm Evening Anxiety
Much of the evening agitation in sundowning is driven by confusion and stress. CBD may help promote a calmer state by interacting with pathways involved in mood regulation, which could ease pacing, barking, and whining.
2. May Support Better Sleep
Because sundowning disrupts the sleep-wake cycle, anything that supports relaxation at night can help. CBD may encourage more settled rest, making it easier for your dog to sleep through the night.
3. May Ease Pain and Inflammation
Since hidden joint pain often adds to nighttime restlessness, CBD's potential anti-inflammatory properties may help an achy senior feel more comfortable.
4. May Support Brain Health
Early research suggests CBD may have neuroprotective qualities. Evidence in dogs with cognitive decline is still limited, so this is best viewed as a possible supportive benefit rather than a proven treatment.
5. May Improve Overall Daily Comfort
By addressing stress, discomfort, and poor sleep together, CBD may help your dog feel calmer, more rested, and more present during the day.
How to Use CBD Oil for Sundowning Dogs Safely
CBD can be a helpful addition to your dog's routine, but how you use it matters.
Talk to Your Vet First
Your vet knows your dog's full health history and can confirm whether the symptoms are sundowning or something else, recommend an appropriate starting dose, flag potential interactions with current medications, and monitor how your dog responds. This step is especially important if your dog takes prescription medication, since CBD can affect how the liver processes some drugs.
Choose the Right Product
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Form: CBD oils and tinctures are easy to measure and can be given directly or mixed with food. CBD treats are convenient, but check the dose per treat.
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Third-party lab testing (COA): This confirms potency and verifies the product is free of contaminants.
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Organic hemp: Helps avoid pesticides and other harmful residues.
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Pet-specific formulas: Human products may contain ingredients that are unsafe for dogs.
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Low or no THC: Look for products with less than 0.3 percent THC.
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Full-spectrum or broad-spectrum: These may offer more benefit than isolate because of the additional hemp compounds.
Start Low and Go Slow
Begin with the lowest recommended amount on the label or the dose your vet suggests, then adjust gradually while watching your dog's behavior. Possible side effects are usually mild and can include drowsiness, dry mouth, or loose stool. Stop use and contact your vet if anything concerning appears.
Other Ways to Help a Sundowning Dog at Home
CBD works best as part of a broader plan. These everyday changes can make evenings noticeably easier:
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Keep a predictable routine. Consistent meal, walk, and bedtime schedules help anchor a confused dog.
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Add gentle daytime activity and enrichment. Walks, sniffing games, and puzzle toys reduce daytime napping so your dog is genuinely tired at night.
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Use soft lighting. A night light in main rooms can reduce disorientation for dogs with poor vision.
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Create a comforting sleep space. A supportive orthopedic bed in a quiet, familiar spot, close to you, can help.
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Minimize household changes. Avoid rearranging furniture where possible, and introduce new people or pets slowly.
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Ask your vet about additional options. Depending on your dog, vets may suggest cognitive support diets, supplements such as melatonin or SAM-e, or prescription medication like selegiline for canine cognitive dysfunction.
Final Thoughts: Calmer Evenings Are Possible
Sundowners in dogs can be heartbreaking to watch and exhausting to manage, but you are not powerless. Recognizing the signs, working with your vet to identify the root cause, and building a supportive routine can make a real difference. For many owners, CBD oil for sundowning dogs becomes a gentle, natural piece of that puzzle, helping to ease anxiety and support rest when evenings are toughest.
The key is a balanced approach: talk to your vet, choose a high-quality, lab-tested product, and give your senior dog a calm, comforting space. With the right support, both of you can look forward to quieter nights.
Frequently Asked Questions
Q: What is sundowning in dogs?
A: Sundowning is a pattern of confusion, restlessness, and anxiety that gets worse in the late afternoon, evening, or night, usually in senior dogs with canine cognitive dysfunction.
Q: Do dogs get sundowners?
A: Yes. Dogs can experience sundowners, particularly as they age. It is most often linked to cognitive decline and tends to be more common in dogs over 10.
Q: Can dogs get sundowners syndrome?
A: Yes. Sundowners syndrome in dogs is a recognized pattern associated with canine cognitive dysfunction, and your vet can help determine whether it is the cause of your dog's evening symptoms.
Q: What are the signs of sundowning in dogs?
A: Common signs include pacing, whining or barking at night, confusion, staring into space, anxiety, reversed sleep patterns, and indoor accidents.
Q: Is there a cure for sundowning in dogs?
A: There is no cure, but symptoms can often be managed with routine changes, environmental support, veterinary treatment, and supportive supplements.
Q: Can CBD oil help with sundowning in dogs?
A: CBD oil for sundowning dogs may help support calmness, sleep, and comfort, but research in dogs is still limited. It should be used alongside, not instead of, veterinary care.
Q: Is CBD safe for senior dogs?
A: CBD is generally well tolerated in pet-specific, lab-tested products with low THC, though mild side effects like drowsiness can occur. Always check with your vet first, especially if your dog takes other medications.
Q: When should I see a vet about sundowning?
A: Schedule a visit as soon as you notice evening confusion or restlessness, and seek immediate care if the confusion comes on suddenly.


